DNA Structure
In a DNA molecule, thymine always pairs with this nitrogen base.
What is Adenine?
This is the process by which a cell makes a copy of the DNA in its nucleus.
What is replication?
Interphase, Cell Division.
What are the 2 main phases (stages) of the cell cycle?
When the nuclear membranes reforms and sister chromatids unwind into chromatin in the nucleus.
What is Telophase?
The location of DNA in animal cells.
What is the nucleus?
It is a double helix.
What is the shape of DNA?
The phase of the cell cycle where DNA replication occurs.
What is the S phase of interphase?
The phase the cell spends the most time in during its existence.
What is Interphase?
When the chromosomes line up across the center of the cell, and each chromosome attaches to a spindle fiber at its centromere, which still holds the chromatids together.
What is metaphase?
The phases of cell division (mitosis) in order from when they begin after Interphase.
prophase, metaphase, anaphase, telophase, cytokinesis
The scientists who discovered DNA structure.
Watson & Crick
Adenine, Thymine, Cytosine, and Guanine
What are the four nitrogen bases found in DNA?
This is the stage during the cell cycle when the cell's nucleus divides into two new nuclei.
What is mitosis?
When the sister chromatids are being pulled apart as spindle fibers shorten.
What is Anaphase?
Genetic information is stored in packages of DNA. Humans have 46 of these.
What are chromosomes?
Spell out the whole word of DNA
Deoxyribonucleic Acid
Because each new cell needs a full set of genetic material (DNA).
Why is DNA replication necessary prior to cell division?
The phase where the cells grows & carries out its activities.
What is G1?
The purpose of Mitosis.
What is to separate the the two copies of genetic material into two new nuclei so that cell division can occur?
3 reasons why cells need to divide.
What are Growth, Repair & Reproduction
The sides of the DNA ladder are made of molecules of deoxyribose and this molecule.
What is phosphate?
The result of DNA replication.
What is two identical strands of DNA (sister chromatids)?
These are formed during cytokinesis.
What are two new daughter cells?
Centrioles migrate to opposite ends of the cell. Spindle fibers form.
What is Prophase?
The regular sequence of of growth and division that cells undergo is know as this.
What is the cell cycle?